package adv4;

public class WrapTest1 {

	public static void main(String[] args) {
		// byte范围内的定义好了常量( -128 127之间）
		Integer i = 300;
		Integer j = 300;
		boolean b = i == j;
		System.out.println(b);
		String s1 = "abc";
		String s2 = "abc";
		String s3 = "a" + "b" + "c";
		String s4 = new String("abc");
		System.out.println(s1 == s2);
		System.out.println(">>>>>>>>>>>");
		System.out.println(s3 == s1);
		System.out.println(s4 == s1);
		String s5 = "Abc";
		System.out.println(s1.equalsIgnoreCase(s5));
		// s5.length();
	}

}
